1) How can you extract minerals? a) Open-pit mines and drilling b) Open-pit mines, underground mines and drilling c) Drilling and extractions 2) When they use tunnels to extract materials from deep inside the crust... a) Open-pit mines b) Underground mines c) Drilling 3) It is used for materials near the surface of the crust a) Open-pit mines b) Underground mines c) Drilling 4) Diamonds are found a) on top of the Earth´s crust b) under the Earth´s crust 5) Sand is found a) on top of the Earth´s crust b) under the Earth´s crust 6) It is a deep hole to extract liquids or gases from inside the crust a) open-pit mines b) underground mines c) drilling

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